Katy wore a gold emblazoned white tutu dress and carried a Great Britain umbrella and even took the time to add UK flag-inspired eyelashes. The singer Tweeted: "'IT'S THE ♥LONDON♥ PREMIERE! Even my lashes are excited! See you soon!'"

Katy shares the heartbreak of her split from comedian and husband Russell Brand in the documentary. Several scenes show the singer doubled over in tears or hopping on planes to meet him in hopes of salvaging the marriage.